var refreshView: BreakOutToRefreshView!
  
  override func viewDidLoad() {
    super.viewDidLoad()
    
    let refreshHeight = CGFloat(100)
    refreshView = BreakOutToRefreshView(scrollView: tableView)
    refreshView.delegate = self
    
    // configure the colors of the refresh view
    refreshView.scenebackgroundColor = UIColor(hue: 0.68, saturation: 0.9, brightness: 0.3, alpha: 1.0)
    refreshView.paddleColor = UIColor.lightGrayColor()
    refreshView.ballColor = UIColor.whiteColor()
    refreshView.blockColors = [UIColor(hue: 0.17, saturation: 0.9, brightness: 1.0, alpha: 1.0), UIColor(hue: 0.17, saturation: 0.7, brightness: 1.0, alpha: 1.0), UIColor(hue: 0.17, saturation: 0.5, brightness: 1.0, alpha: 1.0)]
    
    tableView.addSubview(refreshView)
    
  }
  
extension DemoTableViewController: UIScrollViewDelegate {
 
  override func scrollViewDidScroll(scrollView: UIScrollView) {
    refreshView.scrollViewDidScroll(scrollView)
  }
  
  override func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
    refreshView.scrollViewWillEndDragging(scrollView, withVelocity: velocity, targetContentOffset: targetContentOffset)
  }
  
  override func scrollViewWillBeginDragging(scrollView: UIScrollView) {
    refreshView.scrollViewWillBeginDragging(scrollView)
  }
}

extension DemoTableViewController: BreakOutToRefreshDelegate {
  
  func refreshViewDidRefresh(refreshView: BreakOutToRefreshView) {
    // load stuff from the internet
  }

}